Great safety and comfort. In our world, crashes are a reality. Give yourself the best possible chance of keeping trauma to a minimum, buy the best helmet you can find to protect you. Leatt helmets feature category-defining 360 Turbine Technology, the helmet is lined with 360 turbines, which are discs constructed from an energy-absorbing material designed to allow the head to move slightly inside the helmet. The 3.5 is both ECE and DOT certified. If you are looking for a helmet kit with free goggles take a look at the 3.5, or if you want increased ventilation and Leatts Pro-Fit liner, as well as free goggles, check out the 7.5, 8.5 and 9.5 models.